Visitors use iPad iOS can not chat, the chat window loading, loading, loading..

Dear Botego,
in this case the visitor use iPad iOS Safari Browser can not load chat window, the chat window loading, loading, loading..
Please be so kind and help and find out the reason. For your information chrome browser on iPad works. But Safari Browser is default browser at all iOS devices!

https://www.ads-software.com/plugins/livechat24-7/